复合材料加筋板在剪切载荷下的屈曲特性研究  

BUCKLING PERFORMANCE ANALYSIS OF STIFFENED COMPOSITE PLATE UNDER SHEAR LOADING

作　　者：王平安[1] 矫桂琼[1] 王波[1] 卢智先[2] 

机构地区：[1]西北工业大学力学与土木建筑学院,陕西西安710072 [2]西北工业大学航空学院,陕西西安710072

出　　处：《机械强度》2009年第1期78-82,共5页Journal of Mechanical Strength

摘　　要：通过对复合材料薄壁加筋板结构进行剪切载荷下的屈曲试验研究,得到结构的屈曲模态、屈曲失稳载荷以及破坏形式,并通过有限元方法对结构的屈曲进行数值分析,分析得到的复合材料薄壁加筋板结构的屈曲模态和试验结果一致,屈曲载荷与试验结果吻合较好。试验还发现复合材料薄壁加筋板结构有较高的后屈曲承载能力,后屈曲过程中由于桁条脱胶会造成屈曲模态的变化。还分析了筋条的连续性对屈曲载荷的影响。In order to investigate buckling mode, buckling load and failure mode of structure, shear experiments were conducted for stiffened thin-walled composite plate. Finite element method was also used to analyze the buckling behavior of that composite stiueture. Analysis results reveal buckling mode and buelding loading of finite element analysis （FEA） are aeeordable with experimental results. Experiment results also reveal that stiffened thin-walled composite plate ean bear greater load after buckling. And buelding mode change after stringer adhesive fails. The influence of the eontinuity of rib on the buckling load are also investigated.

关 键 词：复合材料加筋板结构 屈曲模态 屈曲失稳载荷 有限元分析 

分 类 号：TB332[一般工业技术—材料科学与工程] O343.9[理学—固体力学]